摘要：Liquid loading presents a formidable challenge for mature gas wells, often resulting in substantial economic losses. Traditional research has predominantly centered on the analysis of gas-liquid two-phase flow within the wellbore to predict critical gas velocity or rate, aiding in identifying the onset of liquid loading. This study introduces a fully coupled compositional wellbore-reservoir simulator designed to detect liquid loading in both vertical and inclined gas wells. Leveraging the drift-flux model to evaluate flow pattern transitions, this simulator employs pressure or rate constraints at the wellhead as boundary conditions. It comprehensively captures the flow dynamics in both the wellbore and reservoir, unveiling significant changes in gas production rate, water production rate, gas velocity, flow regime, and the reserved position of the liquid film under liquid-loaded conditions. Moreover, the accumulation of liquid at the bottom hole leads to increased reservoir pressure and gas saturation near the wellbore. The simulator predicts a typical unstable production period, emphasizing its crucial role in implementing effective strategies to mitigate liquid loading. This paper investigates the capability of the coupled wellbore-reservoir model to characterize transient liquid loading phenomena from a systematic perspective. The proposed model can function as a real-time tool for predicting the status of liquid loading in gas wells. 漏 2024 Elsevier B.V.

ISSN号：2949-8910

卷、期、页：卷239

发表日期：2024-08-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Geoenergy Science and Engineering

参与作者：Peng, Long,Pagou, Arnold Landjobo,Yin, Dandan,Zhang, Kaiqiang

第一作者：田冷,柴晓龙,韩国庆

论文类型：期刊论文

论文概要：Peng, Long,Pagou, Arnold Landjobo,田冷,柴晓龙,韩国庆,Yin, Dandan,Zhang, Kaiqiang，A fully coupled compositional wellbore/reservoir model for predicting liquid loading in vertical and inclined gas wells，Geoenergy Science and Engineering，2024，卷239

论文题目：A fully coupled compositional wellbore/reservoir model for predicting liquid loading in vertical and inclined gas wells